FrameSync lets you rapidly lip-sync your characters with an audio track.
The newest installer now works with Adobe Animate CC.
Modes to suit your style
Use keyframe numbers (shown below) or add labels to your frames (shown in the top image).
Audio Playback Navigation
No need to scrub the playhead to hear a single frame of audio, or move one frame back or forward. All of your lip-syncing can be completed from within the FrameSync panel. No jumping around the Flash interface!
(compatible from Flash MX 2004 & up, including Adobe Animate CC 2015)